Tài liệu Photoshop cs5 by Dayley part 66 pptx

The Healing Brush tool allows you to choose which area is used to create the patch, and you can use the Patch tool to create a selection around the targeted... Access the Healing Brushes

Using Cloning and

Healing to Restore

Digital Images

IN THIS CHAPTER

The Healing Brush tools Content Aware fill The Clone Stamp Advanced cloning techniques

Even the best photos can have common problems that keep them from

being perfect: dust and scratches, unsightly backgrounds, or just the

presence of an ex-boyfriend Even the most beautiful photo models

can have blemishes, bulges, or cellulite Family pictures are only as good as

the family member talking or the person with his eyes closed The Healing

Brush tools and the Clone Stamp are designed to correct these problems and

make bad photos good and good photos great

You can use these tools to create artistic effects as well, adding elements to

your photos that wouldn’t normally be there and blending images together

seamlessly I show you how these tools work in depth, and before you know

it, your ex will be history

The Healing Brush Tools

I wish I had a Healing Brush that worked in real life From acne to carpet

stains, my life would sure be much easier The idea behind the Healing

Brushes is to take a flaw—such as acne, lens spots, or even unknown

peo-ple—and remove it by covering it with a patch made by subtly copying and

blending the surrounding areas of the image The Healing Brushes blend the

pixel information of the sampled area with the lighting, texture, and

trans-parency information of the target area, so the finished product is an area that

blends better than a straight clone This is especially useful for areas that are

similar but consist of many different tones, like a face

The Spot Healing Brush works automatically, choosing which areas to blend

The Healing Brush tool allows you to choose which area is used to create the

patch, and you can use the Patch tool to create a selection around the targeted

area and preview the resulting fix The Red Eye tool doesn’t really fit in with the description of the Healing Brushes, because the patch it creates is just dark pixels, but it is a fast fix for a common photographic problem, so it is grouped in the Toolbox with the Healing Brushes

Access the Healing Brushes, the Patch tool, and the Red Eye tool by clicking and holding the trian-gle at the bottom of the Toolbox icon, as shown in Figure 15.1, or by typing J (Shift+J to togtrian-gle through the tools)

FIGURE 15.1

The Spot Healing Brush, the Healing Brush, the Patch tool, and the Red Eye tool are all found together in

the Toolbox

The Spot Healing Brush

Sometimes I wonder if Adobe didn’t feel like they acted too soon when they named the Magic Wand The Quick Selection tool is definitely more magical, and the Spot Healing Brush makes things disappear faster than you can say “abracadabra!”

The Spot Healing Brush is primarily used for targeting small blemishes or spots that are surrounded

by areas free of defect Because it doesn’t allow you to manually set a sample area, it’s a hit-and-miss tool When it works, it’s a one-click-wonder, and when it doesn’t, the results are usually extremely bruised and smudged pixels Thank goodness for the Undo option and the History panel!

You can change options to determine how the Spot Healing Brush works by setting the Type Option in the options bar, as shown in Figure 15.2 The options are Proximity Match, Create Texture, and Content Aware

FIGURE 15.2

The options bar for the Spot Healing Brush

Proximity Match

The Spot Healing Brush, when set to its default option of Proximity Match, uses the areas in or around the targeted area to replace the target area If these areas aren’t consistent with what you want your end result to be, you can end up with a very interesting patch

To show you what I mean, look at Figure 15.3 Cleaning the spots off this boy’s nose by just click-ing them with the Spot Healclick-ing Brush is easy, and presto—they disappear! Try that with the spots around his mouth, however, and you can see in the second photo that he starts to acquire an extra body part

Create Texture

In areas that are surrounded by variance like this, you can use the pixels inside of the targeted area

by choosing the Create Texture option to create the patch with the pixels inside of the targeted area instead of the areas outside of it The third photo in Figure 15.3 shows the end result using this option, and it looks much better

FIGURE 15.3

Using the Proximity Match option works great in areas that are consistent, but the Create Texture option is

better in areas of variance

A face in serious need of

clean-up!

Using the Proximity Match option

Using the Create Texture option

Content-Aware

The Content-Aware option is new in Photoshop CS5 and actually samples multiple areas to create

a patch that matches a background with distinctly different areas Although it doesn’t work with body parts very well, it seems to do a fair job with rough borders, such as the one created by the surf in Figure 15.4 You can see that the ocean and the sand were not only cloned to create the new patch, but cloned in a way that they lined up with the rest of the photo

Using the Spot Healing Brush is as simple as using the cursor to paint over the area you want to remove from your image Photoshop then creates a blended patch based on the options you select

to cover the targeted blemish

On the Web Site

You can find the photos shown throughout this section saved as Figure 15-3, Figure 15-4, and Figure 15-5 on

the Web site Use Figure 15-5 to follow along with the exercise n

FIGURE 15.4

The new Content-Aware option makes easy work of taking objects out of a variegated background

Follow these steps to use the Spot Healing Brush to correct a spot or blemish in an image:

1 Open an image that has one or more spots that need correcting

Figure 15.5 is a great photo, but there is a fly in the boy’s hair Zoom closer to the blem-ish if you want a better view

2 Click the Spot Healing Brush to select it.

3 Change the brush size to slightly larger than the area you want healed

Note

If your blemished area is elongated, you can use a smaller brush size, but you must cover the blemish in one

stroke by holding down the left mouse button and dragging to mark the entire blemish before releasing it so

the blemish outside the stroke isn’t used to heal the area inside the stroke n

4 Choose a healing mode from the Mode drop-down list in the options bar

The Normal healing mode creates the blended patch that I described to you The Replace mode works like the Clone Stamp to actually replace the selected area by copying and pasting the source exactly how it appears, not blending the pixels at all This option is rarely a good idea with the Spot Healing Brush because you don’t get to pick the replace-ment pixels The other modes correspond to the blending modes and create lighter or darker versions of the patch

5 Choose a Type of correction from the options bar

For the photo in Figure 15.5, I selected Proximity Match because I want the color and texture of the surrounding hair to become the patch

FIGURE 15.5

There’s a fly in this boy’s hair that distracts from the beauty of this photo

6 Choose Sample All Layers if you are using a second, empty layer, as shown in

Figure 15.6, to make the healing changes

Tip

Using a second layer to create changes on is always an excellent idea It gives you a canvas to work with and

erase changes from as well as leaving your original image unchanged n

7 Click the blemish with the Spot Healing Brush, as shown in Figure 15.7

You can click and drag if needed to cover the entire blemish

Photoshop processes the patch and places it If you used the Content Aware option, this

might take some time Your results may or may not be satisfactory Continue with the fol-lowing steps to see how the Spot Healing brush works differently each time it is used

FIGURE 15.6

Don’t forget to choose Sample All Layers if you are making non-destructive edits to a second, blank layer

FIGURE 15.7

When using the Spot Healing Brush, be sure to cover the entire blemish with one pass

8 Undo and then use the Spot Healing Brush several times over and over to see

sev-eral different results

You probably see a different result every time In other words, if at first you don’t succeed….

9 Make a second pass and even more if necessary

Sometimes making two or three passes cleans up edges left by the initial pass If the Spot Healing Brush worked, you should get results similar to Figure 15.8

FIGURE 15.8

When the Spot Healing Brush works, it’s almost impossible to tell that your image ever had a blemish

If you don’t get the results that you want, you can move on to the more advanced tools

The Healing Brush

The Healing Brush tool works very similarly to the Spot Healing Brush tool, with the added feature that you get to set the sample point—choose the area where the fix comes from For instance, Figure 15.9 could be a fantastic silhouette if the light poles in the background could be removed

As I patch over the areas where the light poles are, I want the patched areas of the sky to follow the gradient created by the setting sun rather than having the splotchy fix that would be created by the Spot Healing Brush The Clone Stamp also would leave splotchy, unblended areas The Healing Brush is the perfect tool